Sildenafil and Verapamil: Drug Interaction Guide

Quick answer: This combination requires caution. Sildenafil and Verapamil can be used together with adjustments and monitoring.

Interaction severity: Moderate — caution required

How Sildenafil interacts with Verapamil

Verapamil inhibits CYP3A4 and can increase sildenafil exposure. Both drugs have vasodilatory effects, increasing the risk of hypotension, dizziness, and syncope.

What you should do

Use a lower initial sildenafil dose and monitor blood pressure symptoms. Counsel patients to avoid taking additional vasodilators without review.

Key facts

Severity

Moderate — caution required

Mechanism

Verapamil inhibits CYP3A4 and can increase sildenafil exposure. Both drugs have vasodilatory effects, increasing the ris...

Action

Use a lower initial sildenafil dose and monitor blood pressure symptoms. Counsel patients to avoid taking additional vas...

Important medical disclaimer: This page provides educational information about drug interactions for general reference. It is not a substitute for professional medical advice, diagnosis, or treatment. Always discuss your specific medications with a qualified healthcare provider before starting, stopping, or changing any treatment. About our editorial team.

Frequently asked questions

Can I take Sildenafil and Verapamil together?

With caution. Use a lower initial sildenafil dose and monitor blood pressure symptoms. Counsel patients to avoid taking additional vasodilators without review.

What is the severity of this interaction?

The interaction between Sildenafil and Verapamil is classified as Moderate — caution required. Verapamil inhibits CYP3A4 and can increase sildenafil exposure. Both drugs have vasodilatory effects, increasing the risk of hypotension, dizziness, and syncope.

What should I do if I'm prescribed both?

Use a lower initial sildenafil dose and monitor blood pressure symptoms. Counsel patients to avoid taking additional vasodilators without review. Always consult your prescribing clinician — do not stop or change medications without medical guidance.

Last reviewed: by iMedic Medical Editorial Team. Our editorial process.